netket.errors.OperatorMultiplicationError

exception netket.errors.OperatorMultiplicationError

Error raised when multiplying two operators with A*B.

The A*B syntax for operator multiplication was deprecated in NetKet 3.20 and has been removed. Use A@B instead for the matrix multiplication of operators, which follows Python’s standard matrix multiplication operator.

Examples

Instead of:

result = operator1 * operator2  # Error

Use:

result = operator1 @ operator2  # Correct

Note

The @ operator was introduced in Python 3.5 specifically for matrix multiplication and is the standard way to express this operation in NumPy, JAX, and other scientific computing libraries.